So i have an idea and in my head it functions im just wondering if anyone has pulled it off before. So my idea is to put a t connector at the low point in my loop. off of the T i would have an on/off valve. Then i would make a fill/drain hose that has the bard the will screw into the on/off valve. This way when i need to drain my system i let the drain hose hang and it will be lower causing the coolant to drain and when i need to fill i simply hold the hose above the case and pour in the coolant. Any opinions? As for placement, if the concept is sound, what would be best?